Cobalt(IV) sulfide, commonly referred to as cobalt sulfide or CoS₂, is an inorganic compound featuring cobalt in its +4 oxidation state. However, it's important to note that cobalt typically exists in the +2 and +3 oxidation states in most compounds; the designation "Cobalt(IV) sulfide" might be a misnomer in common usage, as cobalt sulfides usually refer to CoS (where cobalt is in the +2 state) or mixtures thereof. For the purpose of this overview, we will discuss CoS, which is the more prevalent and well-known form, recognizing the potential confusion in nomenclature.
Features of Cobalt(IV) Sulfide (CoS₂) Powder
Chemical Stability: Cobalt sulfide is chemically stable under normal atmospheric conditions but can react with strong oxidizers.
Conductive Properties: Depending on the specific compound and structure, cobalt sulfides can exhibit semiconducting properties, making them potentially useful in electronic applications.
Magnetic Properties: Some cobalt sulfide compounds may display magnetic behavior due to the presence of cobalt, which is ferromagnetic in its elemental form.
Catalytic Activity: Cobalt sulfides have been explored for their catalytic properties in various chemical reactions, including hydrogen evolution and hydrodesulfurization processes.
Synthesis Flexibility: Cobalt sulfide can be synthesized through various methods, including chemical precipitation, thermal decomposition, and hydrothermal/solvothermal routes, allowing for tunable properties.
Parameters of Cobalt(IV) Sulfide (CoS₂) Powder
Certificate of Analysis
Product
Purity
Specification
Net weight (kg)
Cobalt IV sulfide CoS2 Powder
99.95%
Impurity Content (ppm)
Element
Guarantee Value(max)
Cu
5
Mg
10
Ag
5
Ni
10
Zn
5
Fe
10
Al
10
As
5
Cd
5
Pb
10
Cr
10
Applications of Cobalt(IV) Sulfide (CoS₂) Powder
Energy Storage: Used as a cathode material in lithium-ion batteries due to its high theoretical capacity and stability.
Catalysis: As a catalyst or catalyst support in chemical reactions such as hydrogen production, desulfurization, and other industrial processes.
Magnetic Materials: In the fabrication of magnetic materials and devices due to cobalt's inherent magnetic properties.
Semiconductor Applications: In electronic and optoelectronic devices due to its semiconducting characteristics.
Pigment Industry: Historically, cobalt sulfides have been used as blue pigments in ceramics and glass.
Company Profile
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Storage conditions 1) Store in a dry environment at room temperature. 2) Avoid damp and high temperature. 3) Use immediately after opening the inner packing bag.
FAQs of Cobalt(IV) Sulfide (CoS₂) Powder
Is Cobalt(IV) Sulfide the correct terminology?
There might be a misunderstanding, as cobalt typically forms sulfides in the +2 state (CoS). The notation "Cobalt(IV) sulfide" is less common and might not represent a widely recognized compound in the scientific community.
What is the color of Cobalt Sulfide?
Cobalt sulfide (typically CoS) is black in color.
Is Cobalt Sulfide toxic?
Like many cobalt compounds, cobalt sulfide should be handled with care as cobalt can be toxic, particularly in its inhalable forms. Proper safety measures should be followed during handling and disposal.
How is Cobalt Sulfide synthesized?
Cobalt sulfide can be synthesized through various chemical reactions, often involving the reaction of a cobalt salt with a sulfiding agent in aqueous or non-aqueous media, or through thermal decomposition of precursor compounds.
What are the main advantages of using Cobalt Sulfide in batteries?
In battery applications, cobalt sulfide offers a high theoretical specific capacity, good cyclic stability, and improved rate capability compared to some other cathode materials, making it an attractive candidate for advanced energy storage systems.
